Sennheiser's XS Wireless Digital Portable Base Set is a one-touch ease-of-use wireless audio set that utilizes a digital transmission to seamlessly link audio sources. This elegant solution makes wireless audio for your DSLR easier than ever before while maintaining a reliable connection.The XS Wireless Digital series can be thought of as a wireless "cable replacement". It features a single-button interface and status indicator to handle power and linking tasks. Up to 5 systems can be operated simultaneously with Sennheiser's automatic frequency and interference management technology. XSW-D devices also feature USB re-chargeable lithium-ion batteries that provide up to 5 hours of run time.With its innovative form factor and streamlined operation, XS Wireless Digital is ideal for band practices, club dates, vlogging and freelance video shoots, as well as connection to wireless stage boxes or remote speaker links.IncludesXSW-D 3.5 mm (1/8") transmitterXSW-D 3.5 mm (1/8") receiver3.5 mm coiled cableCold Shoe mountBelt clipUSB-A to USB-C charging cableColored stickers for labellingQuick guideSafety guideFeaturesOne touch ease-of-use2.4 GHz digital transmission for worldwide operation75 meter range (250 ft) in optimal conditionsUp to 5 hours battery life on a single chargeSwitch between multiple transmitters linked to one receiverMix and match different connector typesMute from either transmitter or receiver Sennheiser XSW-D PORTABLE BASE SET 2.4GHz Wireless Portable Set.